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OCR Gateway GCSE Biology A scaling up (B2) overview quiz quiz

10questions. Pick an answer and you'll see why right away.

  1. How many cells does mitosis produce from one parent cell, and how are they related to it?

  2. Which stem cells can differentiate into almost any type of cell?

  3. Which process moves substances against a concentration gradient and needs energy from respiration?

  4. A potato cylinder of mass 5.0 g becomes 4.5 g after soaking in a sugar solution. What is the percentage change in mass?

  5. What happens to the surface area to volume ratio of an organism as it gets larger?

  6. Which two features make alveoli efficient exchange surfaces?

  7. In the double circulatory system, which vessel carries blood from the heart to the lungs?

  8. Why does a red blood cell have no nucleus?

  9. Which plant tissue carries water and mineral ions up from the roots to the leaves?

  10. Which change increases the rate of transpiration from a leaf?